Classify the input using one of these labels: neutral, positive, and negative. @united should NOT sell tickets for @SilverAirways on http://t.co/onhXHCO6bK.  has terrible service and UA staff cannot reach Silver
system
Classify the input using one of these labels: neutral, positive, and negative. @united should NOT sell tickets for @SilverAirways on http://t.co/onhXHCO6bK.  has terrible service and UA staff cannot reach Silver
user
negative
assistant
system
Classify the input using one of these labels: neutral, positive, and negative. @united should NOT sell tickets for @SilverAirways on http://t.co/onhXHCO6bK.  has terrible service and UA staff cannot reach Silver
user
neutral
assistant